1606266645 has 16 divisors (see below), whose sum is σ = 2658648960. Its totient is φ = 827134784.

The previous prime is 1606266611. The next prime is 1606266647. The reversal of 1606266645 is 5466626061.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1606266645 - 2⁹ = 1606266133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1606266597 and 1606266606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606266647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1845849 + ... + 1846718.

It is an arithmetic number, because the mean of its divisors is an integer number (166165560).

Almost surely, 2^1606266645 is an apocalyptic number.

1606266645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1606266645 is a deficient number, since it is larger than the sum of its proper divisors (1052382315).

1606266645 is a wasteful number, since it uses less digits than its factorization.

1606266645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3692604.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 1606266645 is about 40078.2565114801. The cubic root of 1606266645 is about 1171.1320878206.

The spelling of 1606266645 in words is "one billion, six hundred six million, two hundred sixty-six thousand, six hundred forty-five".